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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Tamko Roof Replacement in Orange County: What to Know First
Tamko roof replacement in Orange County typically runs $11,500 to $19,800 for a full tear-off on an average two-story home, depending on the shingle line, decking condition, and roof pitch. Most Tamko replacements take 2 to 4 days once materials land, and we’ll give you a written price before any work starts, not a rough guess that shifts when the crew shows up. If you own a Tamko roof that’s reached the end of its service life, or one that’s failing early because of installation or ventilation problems, this page explains exactly how we handle the replacement, what it costs, and why the process matters as much as the shingle on top. Call (559) 295-5445 and a live person picks up, day or night.
How Tamko Products Fail – and How We Fix Them
Tamko makes a solid shingle, but we’ve replaced enough of them across Orange County to know that failures usually trace back to three things: installation shortcuts, attic ventilation, and coastal sun exposure. Here’s what we see on real roofs, not what shows up in a brochure:
- Heritage and Heritage Premium granule loss. The laminated Heritage line has a textured, dimensional look that holds up well in most climates, but on Orange County homes with full south-facing exposure, we regularly see granule shedding accelerate after year 12 or 13. That’s not always a defect, it’s often the sun working on the asphalt mat. When granules go, the shingle loses its UV shield and the mat starts to dry and crack. If the roof is otherwise sound, we’ll quote a targeted replacement. If the mat is brittle across the field, it’s time for a full tear-off.
- Elite Glass-Seal series curling at the eaves. Tamko’s Elite Glass-Seal three-tab line is a budget-friendly option that shows up on older tract homes in places like Garden Grove and Anaheim. The failure mode we see most is curling at the edges of the eaves, which usually points to an under-ventilated attic, not a bad shingle. Heat builds up under the deck, the shingle bakes from both sides, and the edges lift. We address the ventilation problem during replacement so the new roof doesn’t repeat the same cycle.
- Titan XT and Proline sealant breakdown on low-slope sections. On homes with a low-slope porch or patio roof where Tamko self-seal strips get punished by standing heat, the adhesive can lose grip after a decade, and shingles start to lift in the wind. The fix is not just nailing them back down, it’s evaluating whether the slope should have been a flat-roof membrane instead. We’ll tell you straight if shingles are the wrong tool for that section.
- StormGuard and decking rot from failed flashing. Tamko’s StormGuard leak barrier does its job when it’s installed right, but a lot of water damage we uncover under Tamko roofs traces back to step flashing at walls and chimneys that was never replaced when the shingles were. Water gets behind the flashing, rides down the underlayment, and rots the decking. During replacement, we inspect every flashing point and quote the flashing work upfront, not as a surprise line item later.
- Ventilation-related premature failure across the line. This is the big one. Orange County attics cook in summer, and a Tamko roof over a poorly ventilated attic will fail years early, regardless of the series. We’ve pulled 15-year-old Heritage shingles off homes in Mission Viejo that looked 25 years old because the ridge vent was undersized. Every Tamko replacement we do includes a ventilation assessment, because skipping it means you’re buying the same roof twice.
Styles & brands we work with






Our Tamko Roof Replacement Process
We walk the job before we quote it. Greg Holloway has been doing that since his days hauling materials in the San Gabriel Valley, and it’s the only way to give you a real number instead of a phone estimate you can’t hold anyone to. Here’s how a Tamko replacement goes with us:
- 1
The walkthrough and written price. We inspect the existing roof, attic, and drainage points. We check decking condition, flashing, and ventilation. Then you get a written price with the scope spelled out, before any work starts. That’s the Kingswell Way, and we don’t negotiate it away.
- 2
Tear-off and deck inspection. Crew removes the old Tamko shingles, felt, and fasteners down to the deck. Any rotted or delaminated decking gets replaced and priced per sheet at the pre-agreed rate, not at whatever the moment allows.
- 3
Underlayment and leak barrier. We install new synthetic underlayment or Tamko StormGuard (or an equivalent quality barrier) in valleys, eaves, and penetrations, so the roof’s first line of defense is actually defending.
- 4
Shingle selection and install. You choose from Tamko’s Heritage, Titan XT, or whichever line fits your home from our seven manufacturer options, GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. The product fits the house, not the truck inventory. We install to Tamko’s nailing spec and our own ventilation standards.
- 5
Flashing, ridge cap, and cleanup. New drip edge, step flashing, and ridge cap go on. We run a magnet for nails, clear the gutters, and leave the yard cleaner than we found it.
- 6
The written guarantee, on the spot. Before the crew leaves, you get the guarantee in writing. If anything fails inside the guarantee period, we return and correct it at no charge under the 365-Day Done Right Promise. That’s the whole point of hiring us.
See the difference
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AfterWhat Tamko Roof Replacement Costs in Orange County
No one likes being the first number in a roofing conversation, but you should know what to expect before you pick up the phone. Here are real ranges for a Tamko roof replacement in Orange County:
- Full tear-off and replacement, Tamko Heritage, 1,800 sq ft roof: $11,500 to $14,800
- Full tear-off and replacement, Tamko Titan XT, 1,800 sq ft roof: $12,200 to $15,900
- Decking replacement, per 4×8 sheet (if rot is found): $85 to $135
- Ventilation upgrade (ridge vent, intake correction): $600 to $1,400
- Flashing replacement at chimneys, walls, and skylights: $400 to $1,200 per detail, depending on scope
What moves the price most is decking condition, roof pitch, and how many flashing points need real work. A walkable 4:12 roof with sound decking is a different job than a 7:12 with three skylights and a chimney that’s been leaking for years. Call (559) 295-5445 and we’ll walk the job, give you a written number, and stand behind it.
Why Orange County Homeowners Call Tilehurst Roofing Orange County for Tamko Work
We’re an independent Tamko service provider, not an authorized dealer, which means we recommend what’s actually right for your house, not what a manufacturer program tells us to push. The crew carries experience across all seven major brands, GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, so if a Tamko line isn’t the best fit for your roofline, we’ll say so and show you the alternative. Every job starts with a written price. Every job ends with a written guarantee. And if you call at 9:30 on a Saturday night because a branch went through the roof, a live person answers. Not a voicemail, not a callback queue. Tilehurst Roofing Orange County is part of the Kingswell family of roofing companies, founded in 2000, and we run each job the same way: show up in the window we gave, say the price before the work, clean up after ourselves, and come back if it fails. You get the price before we touch a shingle. That’s how it starts, and that’s how we stay.
FAQs
Tamko’s warranty covers the shingles themselves, not the installation, and it only applies if the roof was installed to Tamko’s published specs. We install to those specs so your warranty stays valid, but the workmanship guarantee you get from us is separate and written, not implied.
Most Tamko replacements in Orange County take 2 to 4 days once materials are on site. We’ll give you a window before the crew arrives, not a “sometime this month” answer, and we call if anything shifts.
If your Tamko roof is under 10 years old and the damage is isolated, repair often makes sense. If it’s past 12 to 15 years, showing granule loss across the field, or you’re chasing leaks in different spots each winter, replacement is usually cheaper over the next five years than five more repairs. We’ll show you both numbers and let you decide.
For flashing, underlayment, and fasteners, quality aftermarket materials are fine and often better than whatever was on the roof originally. For shingles themselves, we recommend staying within the Tamko line you already have, or moving to a full replacement if you’re mixing series. Mixing manufacturers on one roof creates warranty and color-match problems.
Yes. We pull the permits, schedule inspections, and confirm the job passes before we call it done. Orange County has specific re-roof code requirements, and we handle that paperwork so you don’t have to.
If you’re ready for a real price on a Tamko roof replacement, call (559) 295-5445 to schedule your free estimate. A live person answers, and you’ll get the written number before we touch a shingle.
Written by Greg Holloway, Owner, Tilehurst Roofing Orange County at Tilehurst Roofing Orange County, serving Orange County and nearby areas.